Computing machine.



I. D. DAUGHERTY.

COMPUTING MACHINE.

APPLICATION FILED MAI/10.1901.

9 SHEETS-SHEET 1.

l I III IIIIIIW IMQWI- j. D. DAUGHERTY.

COMPUTING MACHINE.

APPLICATloN FILED MAY 10. 19m.

lzltontodSept 26, 1916.

9 SHELlS-SHEET 2.

www f 1. DAUGHERTY.

COMPUTING MACHINE. APPLlcAloN FILED MAY 1o; |301.

PuentedSept. 2G, 1916.

'9 SHEETS-SHEET 3.

9 SHEETS-SHEET 4.

J. D. DAUGHERTY.

` COMPUTING MACHINE. APPLICATION FILED MAY Io. I90I.

@Meow D. DUGHERTY.

COMPUTING MACHINE. APPLICATION FILED MAY lo. 1901,

--SHEET 5.

@Soph 26,1916.

SHL

t @maffe MM 3. DUGHERTY.

CGMPU'HNG MACHJL APPLlcfmm-a FILED mv '10. lem.

Tamm-d Sept 26, 12H6.

9 SHEETS-SHEET s,

51H0; u. mit

(Tin um for i. D. UAUGHERTY.

COMPUTING VCHNE.

l APPLICATION FILED WAY l0, 1901- r l @@f Pzlened mgm 26, 19N) 9 SHEETS-SHEET 7.

ige

".2, DA DAUGHLHK.

COMPUTING MACHWE. APPUCMION msn MAY x0. :901.

I. D. DAUGHERTY COMPUTLNG MACHINE.

APPucATfoN msn MAY 1o. 1901 Q SHEETS-SHEET 9.

yumn upon the wol-lt sheet.

UNITED STATES JAMES DENN Y DAUGHERTY, OF KITTANNING, PENNSYLVANA, y ASSGGE.

FISHER. COMPANY, OF NEW YORK,

. v., e, conrenafricn or nntauann.

COMPUTING--CVIACHXNE 1,1);l,24i8. p

i Application filed May 10,

Y 'o all 1f/'tem it may concern.'

le it known that l, JAMES D. DAUGH- inrrr, a citizen of the `United States, resid ingl at Kittanning, in the county of Armstron-g and State of Pennsylvania, have invented new and useful Improvements in tomputing-Machines, of which the followingris a specification.

` This invention relates to calculating inachines, but more'particularly to a combined typewriting and adding` machine of that zgeneral type disclosed in Patent No. 517,735, issued to me April 3, 1894.

In the patented construction a typewriter of the round platen or traveling paper carriage type is equipped with computing mechanism including' a series of denominational members, digit carriers, orwheels and operating mechanism therefor. The operating mechanism 1ncludes a master wheel or actuator to which variable or differential rotary movement is transmitted from the numeral) keys of the typewriter, for the purpose of cil'ectinp,` corresponding movements of those, digit carriers whose denominational positions correspond with the denominational positions or orders in which the digitsare printed in the column to be computed. The digit carriers are mounted in a movable frame or computing carriage which is advanced relative to the actuator by the typewriter carriage, through the medium of interposed mechanism so arranged that the computing device may be rendered operative at variouspoints in the travel of the carriage, according' to the location of the col- This patented construction, while elicient, imposes upon, the keys the burden not only of controlling' the operation of the computing' device, but also ot actually transmitting` motion thereto. the power necessary tor the operation of both the printing; and computing mechanism beingderived trom the linger of the operator. Furthermore, even when the computing mechanism proper is notoperated by the actuator, the keys are nevertheless burdened by the actuator and its operatingr connections when the said keysare depressed for thepurpose of printing digits which are not to be included in the computation.

Having in mind these more or less objectionable characteristics of my former construction, 'my present invention is directed to tlf'ie provision ot' mea/ns whereby the nu- Specication of .Letters Patent. y

i901. Serial Tilo. tiSLSS.

meral keys of the typewriter', while eonsti tuting'lmeans for causing or controlling the operation of the computing device, will, nevertheless, be relieved the burden ot' directly operating' or transmitting movement to either 'the computing device proper or the actuatingr mechanism therefor. This end is attained by providing' a motor constantly tending to rotate the actuator, but normally restrained by key operated mechanism interposed between the keys and the actuator and automatically connected 'to the .keys by the movement or' the carriage, so that, duringa given period ol the carriage travel, the lieys may be operated to release the actuator which will be driven by' the motor and arrested by a variable or differential stop mechanism' after the actuator has moved a distance corresponding to the value of the particular :nmneral key depressed. The present invention also directed to the provision 'of means for normally relieviiig the keys of the burden incidental to the actuation of Ithe connections between the keys and the actuator, 'this end being attained by providing means for automatically moving an element of said connection to an inoperative position to permit the' keys to be oper ated independently of the actuator or its connections when the printing point of the typewriter is located outside of or beyond the column to be addedA Another object oi' the invention is to automatically restore the power expended bv tl1e motor, after each operation of the coniputing' device incidental to the printing of a number in the column to be computed. This end is attained by ln'oviding' the motor with a restoring' arm which advances toward the lett adistance prolwrtioiiate to the. power expended by the motor and which isy located in thepath of the typewriter carriage,when the latter is retracted, so that, upon the retraction ot the carriage to begin a new line ot' writing` the motor restoring; arm will he automatically moved back to its normal position, thus 11e-whirling' the motor to restore the energy expende".

Further objects are to provide improved mechanism for automatieally causing' relative movement` of the computing` device and its actuator at the proper pointvin the travel of the carriage, Jfor `the purpose lot vpresenting' the proper denoininational members o digit carriers in ope 'ativepositionf Other objects ofthe invention, and further structural characteristics of the preferred embodiment thereof, will appear during the course of the succeeding description of the construction illustrated in the accompanying drawings and embraced within the scope of the appended claims.

1n said drawings :MF igure l is a plan view of my combined typewriting and add ing machine, the computing carriage and the motor arm being shown in the advanced positions assumed by them afterthe'printing--r of a. number in the column to be computed and parts of the typewriter structure being broken away to 'facilitate the illustration. F ig. 2 is a similar View illustrating the manner in which the retraction of the computin g carriage and the motor arm is effected by the retraction of the typewriter carriage. Fig. 3 is a sectional front elevation of the machine, showing the. relative arrangement of the escapements and key levers. Fig. 4 is a side elevation of the machine with the right hand end offthe computing device casing and also the right hand end of the computing carriage broken away. Fig. 5 is a vertical sectional view on a somewhat en- 'larged scale designed more particularly to show the relation of one of the escapement devices and the controlling lever 67 to the mechanism of the typewriter. Fig. V5il is a sectional elevation showing a modified arrangement of escapement in which the stop arm is mounted independently of, but operated by the key lever. Fig. 6 is a detail perspective view showing the normal posi.- tions of a. key, an escapement, and the lock- .ing arm forthe master wheel. Fifr. 7 is a similar view showing the positions assumed. by the same parts when the key is depressed. Figs. 8, 9, and 10 are detail perspective views designed to show the action of an escapement and the master wheel locking arm, Fig. 8 showing the normal position of the parts, Fig. 9 the positions assumed by the escapement stop arm and the locking arm upon the depression of a key and the man-- ner in' which the rotary movement of the master wheel is limited by the stop 57 and the coperating collar 53, and Fig. 10 showing how, upon the rising of the key, the locking arm locks the master wheel and the stop arm of the escapement releases the escapement wheel and permits the independent forward rotation of the latter. Fig. 11 is a front elevation of the motor, showing in dotted lines a position which may be assumed by the restoring arm after the motor has been utilized to operate the computing mechanism. Fig. 1Q is a similar view illustrating thc manner in which the restoring arm is retracted or restored to normal position by thc retraction of the typewriter -ar ringe. Fig. l?) is a sectional view of the i'rujitor. F '14 is a detail perspective view of a portion of the bail which is roel-:ed b v the key levers to unlock the master wheel, the normal positions of the swingingl arms and the controlling lever and trip being shown in full lines, and the positions assumed by these parts when the controlling lever has been operated by the trip being iudicated in dotted lines. Fig. 15 is a similar view indicating the manner in which the trip mounted on the typewriter carriage rrstores the controlling lever and the swinging arms ot the bail to their normal positions as the typewriter carriage is retracted. Fig. 'lo is a detail view of thc detent for retaining the rock shaft in either position. Fig. 17 is a horizontal section through the computing device casing, showing in plan the mechanism contained therein. Fig. 1H is a perspective view of one of the number wheels, the trip levers carried therebyv and the cam disk coperating with the trip levers. Fig. 19 is an elevation of the mechanism for locking and releasing. the master wheel, the depressed position ofthe key and the released position of the master-wheel lock being indicated in dotted lines. Fig. 20 is a sectional view of a portion of the computing mechanism. Fig. 21 is a sectional view of the computing device casing disclosing the interior mechanism, the number wheel resetting lever and associated parts being moved to the positions they assume at the completion of the number wheel resetting operation. Fig. 22 is a detail perspective view of the resetting member, and Fig. 23 is a similar view of the locking wheel. i

For the purpose of this disclosure, I have shown an Underwood typewriter equipped in accordance with my invention, but it should be distinctly understood at the outset that in certain of its broader aspects, my invention relates to calculating machines, regardless of whether or not recording or printing mechanism is employed i1 connection therewith. In certain other aspects, the invention relates to new and useful features of a combined recording and calculating mechanism, and, in a more restricted sense, it relates to a combined typewriting and computing mechanism the novelty and utility of which is not dependent upon the particular type or class of typewriter employed, since the generic invention involved is applicable to a .machine including as an adjunctive organization thereof any recording mechanism having the essential characteristics of all typewriters, to-wit, printing mechanism and paper supporting means which are relatively movable, one with. respect to the other to effect the spacing of the characters printed.

The general organization 0f the machine.

By way of premise, the general organization of the machine will he described m meente master wheel is held locked against rotary movement, and the `key levers of the typewriter are entirely disconnected from the operating connections of the computing mechanism, u'sed independently in the ordinary mannero Therefore, in the writing of any desired matter, as for instance, descriptions oitl theI items of a bill, the typewriter is unaffected 'by presence of the computing mecha nism. and the keys are not burdened by the operating' connections thereof. By means, however, of adpistable devices mounted on the typewriter carriage, the computing mechanism is brought under the control of the numeral keys of the typewriter whenever, in the travel of the platen, that space, appropriated onthe work sheet to the column of numbers to'y be computed, is brought opposite the printing point ot' the machine. lthess devices, acting automatically at the proper time, establish first, a cooperative rotation between the keys and a series of stop devices and also between the keys and locking ymechanism of the master wheel, and second, a cooperative relation between the carriage oi' the typewriter and the computing carriage. :When this cooperative relation of the parts has been autmnatically eiiiected, the dei'nession of a key will etiect the printing of a digit and the release of master wheel. Vihen so released, the master wheel will be rotated by a motor until arrested by the particular stop device L ppropriated to and cooperatingwirith the hey depressed. This movement ot the mas-4 whoel will be proportionate to the value et the digit printed and the same proportionate rotary movement will be transmitted, by the master wheel, to the number wheel occupying that denominational position in the series ot number wheels, which corresponds to the denominational position of the'printed digit in the column to be coniputed. Then the key is released. the master wheel will be automatically locked against tui-ther rotary movement, and .as the l' vpc writer cariage advances to present the next order or denomination of the column opposite the printing point, the computing carriage will be simultaneously moved to pres nt the.I next or (1m-respondmer number `\heei irl mesh with the master wheel, and this cycle; ot' operations will be repeated as oiten digits are printed in the column.

so that the typewriter may be' thirty teeth, bearing three series of Then the carriage is retracted it automatically destroys the cooperative relation between the keys and the master wheel, rewinds the driving motor for said wheel,` and restores the computing carriage to ils normal position.

Associated with the number wheels is carrying mechanism olE any approved t'orm for transferring to a wheel of higher denomination the amount accumulated upon any wheel, when the latter reaches the limit of its denominational capacity the carrying mechanism illustrated in the drawings being that disclosed in Reissue. Patent #11147 to A. C. Ludlum. The number wheels are restoredv to Zero by the manual rotationy ot' the number wheel shaft, which is equipped with devices for engaging and rotating the number wheels.

Tile machine n (lem/.

l indicates the frame ot' an lnderwood typewriter, 2 the traveling carriage thereo't', which is power driven and escapement 'controlled, as usual, 3 the numeral keys. t the numeral key levers, andl 5 the letter key levers. As is well understood in the art, the operation of any key lever eliects the printing of the proper character and also open ates the escapement of the typewriter to permit sutiicient advance of the carriage to space the characters printed.

In accordance with my invention, the computing device casing (i is suitably attached to the right hand side ot' the tvpcwriter frame and incloses the computing device proper. This computing device includesl a series of nine denominational members, number wheels, or digit carriers, (nl), c, 1f, f, ff, lz. and v', which may represent any desi red denominational values, as t'or instance, units, tens, hundreds, thousands, tens of thousands, hundreds of thousands, millions, tens of millions, and hundnreds of Infillionsi or. if money values are computed, the two wheels of lowest denomination mav indicate units and tens of cents. l

The computing cwrr/z'alf/e.-'1`lie number wheels are loosely mounted on a number wheel shaft 7 extending across the computing carriage 8 movably mounted upon rods or tracks 9 and l0 extending across the cas"- ing directly under a pair of bars ll and l2 which rest upon antifrictional elements, as for instance, balls 13, interposed between the bars and tracks, as shown in Fig. 2l, and serving to render the movement of the computing carriage substantially anlirictional. lllach number wheel in the present embodiment of the invention is provided with each ranging from 0 to 9 inclusive, one digit on each wheel being exhibited opposite a sight opening 14, in the casing'if shown in Fig. l. Thev several ninbcr digits wheels c, etc., are designed to be presented successively in cope ative relation with an actuator or master wheel 15 during the movement ot the computing carriage upon the tracks Sl and 10, said carriage being normally located at the extreme right hand side ot' the casing so that the number wheel z' of highest order will be to the right of and out ot engagement witli'the actuator 15, as shown in Fig. 20.

The 'lfm-able advancing mid ret/'acting machen/sm for the computing menge- The advance of the computing carriage to present the n'ui'iiber wheel of highest order, and thereaiter successive number wheels, opposite the master wheel or actuator l5, is effected by the propelling mechanism of the typewriter carriage 16' through the medium of the latter. It is contemplated, however, to provide means whereby this movement of the two carriages 8 and 'i6 in unison will bc occasioned only during that period in the travel of the typewriter carriage during which the printing point of the machine will be opposite the column to be computed, so that, during the printing of characters outside ot the limits of such column, the coniputing carriage will remain in its normal position. It will, of course, beunderstood that the location, on the work sheet, ofthe column to be computed will vary, although it is usually adjacent to the right hand edge of the paper. Therefore, the present machine embodies mechanism variable in accordance with the location of the column on the work sheet and arranged to automatically connect the typewriter carriage with the computing carriage at the proper point in the travel of the former and to maintain such connection While the printing mechanism is opposite the column to be computed, thus insuring, by the uniform movement of 'the two carriages, the location of the actuator opposite the number wheel of that denomination which corresponds with the denominational position of the printing mechanism with respect to the column. This variable carriage connecting mechanism includes a vertically disposed rock shaft 1T mounted in suitable bearings adjacent to the rear side of the typewriter and provided at its lower end with a forwardly extending arm 18 having vertically disposed extremity 19 connected by a link 2O to the computing carriage 8, as shown in Figs. l, 5 and et. At the upper end of the shaft 17 is a forwardly extending arm Q1 having a vertically disposed extremity 29. arranged in the patin of two projections', blocks or `trips 23 and 24 adjustablyinounted in any suitable manner on the typewriter carriage, as for instance, upon a` rod extendinglongitudinally ot the carriage and movable therewith. Any suitable means., as ior. instance. set screws QG, may be provided to retaii-rthe Liege/ie blocks and 2l in their adjusted positions upon the rod Q5.

.\s the typewriter carriage moves to the lett during the operation ot' printing, the computing carriage S will remain inv its normal inoperative` position at the right hand side oi' the casing G. But, just beloi'e this movement of the typewriter carriage brings the printing point of the machine opposite the column to be computed, the block or trip 23 having been advanced by the typewriter carriage into engagement with the arm 2l, will establish an operative connection between the typewriter and computing' carriages. rl`heret`ore, as the typewriter carriage advances into position for the printing of a digit in the highest denominational position in the column to be computed. the computing carriage will be simultaneously moved to the left to present the first number wheel i' in cooperative relation with the master wheel or actuator 15. This connection Vbetween the carriages con tinues during the printing oi' a number in the column, so that, as each digit is printed in a given denominational position in the column, the master wheel will be in coperative relation with the number wheel ofl corresponding denomination. It will therefore be seen that if the depression of the numeral keys to print digits in the column, causes rotary movement of the master wheel corresponding in extent to the values of the digits printed, the number wheels oi the computing device, corresponding in denominational position to the denominational positions of the digits printed, will be operated to an extent corresponding to the unitary v: lues of such digits and, that the values printed will thus be accumulated upon the computing device.

By adjusting the trip 23 to various positions on the bar 25, the computing device may be rendered operative at various points in the travel of the carriage, in accordance with the varying location on the work sheet ot the column to be computed. Ordinarily, however, in making outbills, or the like, the major portion of the carriage travel is devoted to the writing of items or other matt-er beginning at the left hand margin oi the work sheet, and, the computing device is rendered operative when the vcarriage is in Aposition to permit the printing ot" a4 column of digits oi' numbers adjacent tothe right hand margin ot the sheet. 'When the typewriter carriage is retracted, the trip orbloc r 2t will engage the arm 21. thus .swinging the latter back to eliect the retraction ot' the coiiiiputing device carriage to its normal .inoperative position, see Fig. 2.

' XVe have now seen how the computing device proper is mounted in a small casing at .th'e'iiglit ot' the typewriter, and how, by

iii'eans of variable connecting mechanism,

Cfr

infames the carriage propelling mechanism of the typewriter serves to automatically .render the computing device operative at a predetermined point in the travel of the carriage, and how.Y1 after the printing of a number, the computing device is automatically rendered inoperative upon the retraction of the carnage, so that, when digits are printed outside or the column to he computed, no corresponding operation or the computing device will loe effected.,

Tfn? motor for driving z'fzc master vofiffolflt next in order to describe the mechai'iism whereby, when a numeral key of the typewriter'is depressed, to eiect the printing of a digit in the column to he computed, the master Wheel will he operated to 'rotate the proper number Wheel Ator the purpose of including the value of the printed digit inthe computation to he eiected. oy the eomiuti'ng device.

s previously stated, one of the primary objects of the invention to lighten the touch hy relieving the keys or the burden usually imposed upon them. This accomplished loy providingn power mechanism tor driving the master vvheel and controllingr mechanism by means of which the operations of the master wheel are controlled from the keys, said keys :nd master wheel being operatively connected in the sense that the depression oli the keys causes the operation of the master wheel, although they do not actually transmit movement to the latter from the finger oi' the operator.

As shown in Figs. 3 and the master wheel or actuator 154 is keyed or otherwise fixed upon an actuator shaft 22T journaled in suitable bearings and extending through the casing,` 6 andx acrossI the frame of the typewriter above the key levers. rlhis shaft 27 is driven by a moto 9,8 comprisingF a motor spring' '29 lined at" one end, as indicated atv 30, to a ixed part, as 'for instance., one of two motor supporting brackets 31 and 32. rl`le apposite or inner end of the spring '29 jcured, as indicated at 33, to the huh of a spring dr m 35 inclosing the spring 2S) and iixed upon the motor shaft fill journaled in suitable hearings in the brackets fil und Sii, see Figs. 4- and 13. Also lined upon the shalt do, in spaced relation to the drum is a motor ratchet 3'? designs-d to drive a comparatively large beveled motor gear 3S through the medium oi a pawl i mounted on 'the "front face of the liti and urged into engagement with a tooth of the ratchet i? by a spring; 40, see Fig. 12. lllhen um'estrained, the spring 29 rotates the motor shaft in the. direction oi' the arror.' in Fin'. il, and thus causes the ratchet wheel 37 to drive the motor gear 38 through the medium oi the interposed pavvl 39. The movement of the motor rear 38 is transmitted to the actuator shaft 27 through the computing* device or register.

end is attained by extending a motor re setting or restoring arm 43 from the drum 35 into the path of a projecting portion lll of the typewriter carriage, see Figs. 2, 1 and 12. As the operation or printingl progresses, the typewriter' carriage moves toward the left and aivay from the arm i3, and` as the motor operates to transmit motion to the master Wheel during the printing and recording or registering of a number, the upper end of the motor restoring arm 43 will advance toward the left a dis tance proportionate to the rotation of the motor. gear 3S under the impulse of the spring 29. As the carriage is retracted, however, after the recording and ref risteringr of a number, the projection 4% will en gage the arm i3 and thus return the latter to its normal position, the motor gear 38 being held stationary, by mechanism to he described, during the 'return of the arm 43, and the motor ratchet 37 clicking idly past the pawl 39 as the motor shaft rotates in the direction of the arrow in Fig; 12 to rewind the motor spring.

The /cey operated controlling means ,for he master wheelr-lvhe the motor 28 constantly exerts a force tending to rotate the actuator shaft and actuator, it is normally restrained hy a lockingr arm 45, see Figs. el, 6, 7 and 19, fixed to and extending upwardly from a shaft 4G and having a beak or projection i7 which normally extends between two teeth of the master .Wheel 15 and locks the same against rotary move ment. The shaft 46 extends transversely across the frames 1 and 6 and is designed to he rocked for the purpose of moving` the arm out of engagement with the actuator '15 and thus releasing; the latter upon the depression of a numeral key of the typewriter. To accomplish this result, the shaft 4G is provided with a rearwardly extendingr bail 48,' see Figs. (l and 7, comprising arms 49 and a rock shaft 50 provided with a series of radially disposed arms 51. These arms 51 are located directly below the numeral key levers 4 and are disposed vertically during the printing of a number in the column to he, computed. These arms or' projections 51 serve to establish an operative relation between the bail 48 and the numeral key levers, while permitting said bail to occupy a position sufiiciently depressed 'to prevent its actuation when one of the levers 5 are operated upon the depression of a letter key of the typewriter. Then a numeral key is depressed to print a ynumeral in the column to be co1n]nitedthe lever of said key, by tmgagement with one of the arms 5l. depresses the bailA 4S and thus rocks the shat't 46 to withdraw the locking arm -l5 from engagement with the actuator and said actuator will immediately rotate under the impulse of the motor a distance proportionate to the value of. the particular key depressed. This brings us to a consideration of the mechanism employed for determining or controlling the degree of movement of the actuator. i

The control/inf] (fera/lenient? for the maser /r/mf/-This mechanism embraces a series of escapements each appropriated to a numeral key and having a throw proportionate to the value thereof. Each escapement includes an escapement wheel 52 loosely mounted on the actuator shaft 27 adjacent to one end of a stop collar 53 fixed on the shaft and provided with a recess 54 the end walls of which constitute spaced stops 55 and 56 secured to and movable with the actuator shaft. Between these two stops 55 and 56 on the shaft extend.; an intermediate stop 57, projecting from the side face of the escapement wheel Normally, the interu'iediate stop 57 is retained in engagement with the advanced stop 56 by a spiral spring` 58 encircling the collar and having its opposite ends fixed to the collar 53 and the wheel 52, respectively. (Fig. It is obvious that` as the wheel 52 is loose on the shaft 27, the tendency 0f the spring 58 to unwind will throw the wheel 52 around until this movement, independent of the shaft 27, is arrested by the engagement of the intermediate stop 57, carried by the wheel, with the advanced stop 56, carried by the shaft.

Operated by, and preferably secured t0 the adjacent numeral key lever 4 is an escapement-wheel locking member 59 hatying a beak 60, see Fig. 6, which, when the numeral key is depressed, is brought into engagement with one of the teeth of the escapement wheel 52, see Fig. 7, to lock the same against rotary movement. Ve have already seen hat this same movement of the key lever which causes the locking of the escapement wheel by the locking member 59, effects the release of the master wheel or actuator 15 through the medium of the bail 48, the shaft 46, and the arm 45, but by noting the normal relation yof the beak 60 to the adjacent escapement wheel. and the extent of the engagement between the beak 47 and the actuator 15, Fig. 6, it will be evident that, as the numeral key is depressed, the escapement wheel will be locked by the arm 59I before the actuator is released by the arm 45. Therefore. as soon as the depression of the Akey lever eifects the release of the master wheel 15 by the withdrawal of the arm 45 therefrom,- tlie motor will rotate the shaft 27 in the direction of the arrow in Fig. 8, and this movement will continue until arrested by the engagement of the stop 55 on the shaft with the now stationary stop 57 on the locked escapement wheel, see Fig, i). Thus it will he seen that since the stops 56 and 57 are normally in engagement, Fig. 8, and as the stops and 57 are in engagement when the movement is completed, Fig. f). the extent or degree of the movement will be determined by the distance between the stops and 56 on the actuator shaft. Therefore, the recess 54 in each'of the collars is of a different length, the distance between the depressed to print a digit and the actuator has been released and operated in the manner described, to turn a number wheel of the computing device a number of increments or units of movement corresponding to the value of such digit, the key is released, thus withdrawing the locking member 59 from engagenient with the escapement wheel and permitting ar spring 61 acting on the bail 48 to move the arm 45 into locking engagement with the actuator 15. 1t will be noted. however, that the actuator 15 is locked before the escapement wheel is re.- llased. this being due to the same relation of parts which causes the locking of the escapement wheel before the actuator is released in the manner heretofore explained.v

As the locking member 59 moves out of engagement with the escapement wheel, the spring 58 will advance the latter until its stop 57 engages the advanced stop 56 on the shaft and this relation of the shaft and wheel will be maintained until the wheel is the shaft and maintain their normal relation thereto.

Tw carriage cofntrollccl merma for afi/,150- mazz'cally establishing and destroy/ng the operative relation between the leef/s mul the master 'wheel controlling @aiment/ions. In the absenceof mechanism other than that thus far described, the depression of a numeral key to cause the printing of a digitI at any point on the work sheet outside of the column to be computed would effect a corresponding operation of the master Wheel or actuator 15, although no number wheel of the computing device would be Operated, because the computing carriage would not have begun its movement to present a number wheel to the actuator. Therefore, the keys would be burdened by the operating or controlling connections of the computing' device, and the burden ot' rewinding the niotor would be uselessly imposed upon the carriage during its retraction. To avoid these useless movements of the parts, and thus relieve the keys and carriage of nnnecessary burdens, I so ai ange the mechanism that the numeral keys will be normally wholly out of coperative relation with the computing mechanism or its actuator, and provide carriage controlled means for operatively connecting the keys with the aittuator when the carriage arrives in posi tion to permit the printing' of a digit in the column to be computed, and for automatically moving an element of said connection to an'inoperative position to permit the keys to be operated independently of the actuator when depressed to cause the printing oit digits outside of the column. To this end the shaft 50 is mounted to rock, as heretofore stated, this movement being utilized to swing the arms 51 into or out ot coperative relation with the key levers 4. Normally, the rock shaft 50 and the arms 51 are disposed in the inoperative position shown iii Figs. 5 and14, being yieldingly retained by a spring,r detent 62 engaging a notch' (lil in the rock shaft 50, Fig. 1G. To the right hand end of the shaft 50, Fig. 14. is secured an arm G4 to the extremity of which is attached the lower end of a vertically disposed connecting rod or link 65, attached at its upper extremity to the depending.,y arm 66 of a cam lever GT fulcruind as indicated at 68 and having a crescent shaped portion the ends of which-constitute a pair of triffgers 69 and 70. The trigger 69 normally extends into the path of movement otl a trip 71 adjustable on a bar 72 disposed lengtlr wise'ot` and movable with the typewriter.

carriage, Figs. 1, 2, 4 and il. 'The trip 71 is adjusted along the bar 72 and is selcured by a set screw 73 in proper position to engage the trigger (S9 in time. to trip 'the latter and pass beyond the saine as the carriage moves into position to permit the printing of a digit in the highest denoininavtii'nial pov sition in the column. Obviously, this action of the trip 71 upon the lever 67 is that of a cam. The pin is cylindrical or round in form, and therefore the active surface of the pin which is substantially one-fourth of its circumference, constitutes in etl'cct an iiiclined surface or cani, it being noted that the oord of the arc of this effective surface of the pin is disposed'at an angle of fortyfive degrees to the horizontal plane. in which the carriage moves. Thiisthe trip and the trigger or the cam and the lever, each pre#` Sents an inclined face to the other. and the movement of these faces along one another by reason of tlie carriage movement, de.

tlf) and rocking,` the shaft 5() to present the arms 5l iii the substantially vertical operative position shown in Figs. (l. T. l5 and lil, the .shaft 5() heineretained in this position by the deteiit 32 which engages a second notch oil in the .shaft 50. il'lien the arms 5l are in their normal positions. shown iii Figs. 5 and il, the depression oi the numeral keys willi'iot. inovlel the hail ll to rcleasc the master wheel or actuator l5. in tact. the keys will be entirel)y disconnected from both the (ainipiitiiif.r device and its artuator and from the mechanism whereinY the operations of the actuator are placed under the control of the keys. but when 'th-r carriage has effected the operation of the tripger (il) in the manner described and thus raised the arms 51 to their operative posi- .tioiis the depression of a key lever will ct'- fect the depression ot' the hail and thus re- .lease the actuator to permit the operation o'lE swung' up above the trip. Fig. lo. so that i when the vtypewriter carriage is retracted to begin a new line of writing, the trip il will engage the trigger 'Z0 and shift the lever 5( back to its normal position The arms 5l are thus restored to their normal or inoperA ative positions. and the trip (Si) is airain presented in the path of trip i' to lie operated. as before described. to copeiativcly connect thel keys with the actuator at the proper time during' the next advance oi the carriage.`

A l u il l 1 Attention is now directed to the iiactjihat f the movement of the typewriter carriagrein the direction ot letter spacing autoifnatically effects the relative lateral movement of the. number wheels and their actuator 'to establish their cooperative relation and to change the denominational relation ot the actuator with respect to the computing device. and that `sucli iiioveinent of the carriage also serves toau'toniatically establish an opera` tive connection between the. numeral ireys ot the typewriter and the actuator to pli. -e the latter under the control of the keys during` that portion only of the carriage travel which serves to permit digits to he printed iii the column to be computed. Attention is also directed to the fact that the retrac-` tion of the carriageautomatically per'fornisiieo third. it restores or rcwinds the motor` the' order of performance being imn'iaterial.

iiach numeral wheel. except the wheel of highest order, is equipped on the left hand side face thereof with three small segmental trip levers 7l. sceFig. 1S. fulcrumed intermediate of their ends and associated each with a stop pin which limits the swinging movement of the lever in one direction. The trip levers I-l. cooperate with cam lugs or projections 7G extending from the peripheries of a series of resetting cams or disks 7T, mounted on the number wheel shaft 7 and alternating with the number wheels, lig. 20. filhus one of these disks 7T is appropriated to each wheel, except the wheel of highest order, and is equipped with three of the projections 76 each of which coperates with a trip lever 7s in the wheel reset ting operation, to be presently described.

rlhe wheel in engagement with the actuator will of course be locked b v the latter and it remains tobe seen how those wheels located to the right of the actuator are locked.

Mounted to swing from the bar is a number wheel locking bail 100 which exten/ls entirelvY across the casing as shown in Fig. 1T, and which is provided with a locking flange 101 which extends from the right hand-end of the bail to a point sufieicnlv near the plane of the actuator to cnablc the bail to engage and lock the wheels which ma \v be located to the right of the aciuator. but no others. The flange lOl of' the locking bail 100 extends between the teeth of the wheels engaged by it, thus serving to accurately aline the teeth of the whccls and to locli the same against accidental movement in either direction.

vWhen the computing carriage moves to the left from its normal .inoperative position. the sucer. sive number wheels move out oi" gement with the locking hail and into engagement with the actuator l).

vHuacla fo .ew/'of-liaving described the entire mechanism which is necessary for the printing of a column of numbers and the mechanical compi-itation of the column total, l will now proceed to describe the mechanism whercbvI the number wheels are reset to zero.

Mounted upon the right hand cnd of the number wheel shaft T is a locking wheel l0'2, Figs. li. 1E) and 2). engaged b v the locking bail l0() to securely1 lock the shaft T and the cams TT against rotary movement. This wheel ,1.02 is provided with oney or more,

prcferablv three, arcuate slots i025 concentric with tlr.- shaft i and disposed. when the computing carriage is moved lo the cxtrcme right hand side of the casing (i, to bc cngagcd b v one or more lugsl lill projecting from an annular number whccl resetting member l05. yl`lie member 105 is retained against the right hand wall of thc casing b v screws 100 extended through arcuate slots lili in the mcmbcr lll-'v as shown in Fig. lil. Projectingl'orwardl)y from the member 105 is a wheel resetting arm or handle 10h' below which the member 103 is formed with an unlocking cam 10E) arranged to engage the locking bail 100 and to move the same back to an inoperative position` as shown in Fig. 2T, when the arm 10hl is swung up, When it is desired to reset the number wheels to zero. the arm lll is elevated to rotate-thc resetting member 105. The first part of this movement causes the unlocking cam 10S) to throw back the bail 100, the lugs lU-l on the resetting member meanwhile traversing the slots ,1,025 in the wheel 102. when the lugs 10i reach the ends of the slots 10i-i, a positive connection will be established between the resetting member and the wheel. and continued movement of the former will therefore cause the wheel 102, the number wheel shaft 7, and l' manner shown in Fig. 20, thus establishing a positive connection between the cams 7T and the number wheels, since the trip levers will be'prevented by the pins 75 from moving out of engagement with the lugs 70. Continued movement of the resetting member in the same direction will thus cause the number wheels to rotate with the shaft until said wheels have reached the xero position, it being evident that when the shaft i' has been given one-third of a complete rotation, all of the number wheels will necessarily be in position to exhibit O before the sight opening. The number wheels hav'- ing been reset, the resetting arm 108 is swung back to its normal position, thus restoring the shaft 7, the cams 7T, and the wheel 102 to their normal positions and withdrawing the unlocking cam lOl) from engagement with the looking bail l0() and thus permitting said bail to be restored to its normal or locking position by a spring ln Fig. 5 is shown a modified form of the escapement wheel locking member 5f). In the preferred form, as shown in Fig. 5, the locking member is in the ,form of an arm secured to the key lever, as already described, 'but in the modification shown in Fig. 5, the locking' rnen'ibers 59 arc in the form of first-class levers fnlcrumed upon a common shaft 59u extending across the typeu writer frame below the key levers, each having its rear end bifui'cated and formed with.

lateral projections 59h and 59 enga-ging the upper and lower edges of a numeral key lever. The frontend of each member 59 is provided with a beak 59d which is urged upwardly Vinto 'engagement with the adja cent escapemeiit 'Wheelwwhen the rear end of master actuator therefor, and actuator controlling* mechanism including a series of keys and a series of rotary escapement eleinents arranged to be released and arrested upon the depression of a key.

2. 'In a computing medhanism, a series of denorninational members, a power operated master actuator therefor, and actuator controlling mechanism including a rotary meniber and a key, a series of arresting devices normally movable with said rotary member, andnxeans operative upon the depression of the key to hold one of said arresting devices stationary and to release the rotary member. l

3. In a computing mechanism, the combination with a series of' denominational members and a motor operated master actuator. therefor', of controlling mechanism for said/actuator including a pair of relatively movabie stops one of which is movable with the actuator, a key, and means operated thereby forholding' the other. stop in position to arrest the movement of the stop which moves .with the actuator.

4. In a computing mechanism, the com- `bination with a series of denominational members and a motor operated master actuatortherefor, of controlling` mechanism for said actuator including a rotary niember movable with the actuator, .a series of stops\ movable with the rotary member, a secondseries of stops coperating with the stops first named, a series of keys, and keyoperated means for retaining the stops of the second series in their effective positions.

l 5. In a Vcomputing mechanism, the com bination with a series of denominational members and a motor operated master ac- .ti'iatortherefon of controlling,` means for saidV actuator including a rotary shaft, e,

series of. stops carried-thereby, a second se ries of stops 'constituting arresting;` devices the shaft, the stops of the second series te ing paired with 'the stops of the first n med series and each pair of stops being separated hy a different interval., a series of k and means operated by each key for retaining a stop of the second series in fixed posi-- tion to be engaged by the adjacent stop of Ithe other series for the purpose of arrostin the rotary movement of the shaft.

i. ln a computing mechanism, the combination with a series of denominational inemn bers and a master actuator therefor, of no tuator controlling means including a. ro-

tary shaft,l a series of stops fixed thereon, a

second series of stops mounted on the slr ft and independently movable around e same, the stops of the :two series being paired and each pair of stops being sepan rated by a different interval, key-operate1 means for retaining stop of the second ries stationary to be engaged 'by the a cent stop of the other series after giver tary movement of the shaft, and means moving the stops of 'the second series i tive to the shaft for the purpose of restoring them to normal position after the shaft has been arrested.

8. ln a computingmechanism, the colfibination lwith a series of denominational bers and a motor operated master actuator therefor, of actuator controlling mechanism including a series of keysa shaft, two series of paired stops fixed on the shaft, a series of relatively movable arresting stops each dicposed between a pair of fixed stops on the shaft, key-operated means for holding one of the arresting stops stationary when a key is depressed, and means operative noon the release of said arresting stop for advancing the same relative to the shaft.

9.111 a computing' mechanism, the cmiioi nationwith a seiies of denomin.ationalinemn bers anda' master actuator therefor, of controlling` means for said actuator includin a series of keys, a shaft provided with and a series of wheels movably mou the shaft. and provided with stops coin ating with the stopstiist named, and l operated means for retaining the des. Wheel in fixed position. l0. in a computing mechanism, the coinbination with a series of denominatie members and a master actuator ther-eroi", o t controlling .meansv for said/actuator itk-hidl. (Et) meente devicegof a typen'ritingg machine including a traveling carriage, printing mechanism and operatin keys, en operating connection etween the keys and tbe computing device, and a cam lever extended through the top oi 'the @aliene and arranged to disconnect the ting' connections from tile keys.

"ll'ie combination with a typewriter, of o computing device including series of denoininationel members, e master actuatorA ttor the competitie' device, a motor for op e. yting tbe sctnator, ineens tor rela ve movement tbe computing dei/ice and f actuator to clienge the denominational relation thereof, and means brought into ec tion by tbe movement of tbe 'typewriter cerringe to estnblisb. a coperatiwe relation between tbe numeral l-:eys o'i be typewriter ,and the actnntor,

'ilie combination with e. typewriter, of :i computing device including s series of do tional i embers, e master actuator motor tor the actuator, stop mechanism controlled by ,keys ot tie typewriter to arrest r after predetermined movement a inciting; device for the actuator meily disconnected from 'the numeral i 7s of the typewriter, and means for .autoceiiy esteblishing e cooperative rela- 't ween said numerai lief/sand the V.fr/ice, f be onibinationwitb a typewriter, of a competing device including a series of Cle-- nominationai' members, e meister ,actuator therefor, e driving motor for the actuator, di'lere tial stop niecninism controlled by tbe numeral lieys of the typewriter to arrest tlie actnntor a'lter predetermined movenient tlfiereoi, end a locking device for tbe actuator'normally disconnected from the nu-l rierel keys et' 'the typewriter, and means ad- ?,ns'tnble ,on the typewriter and arranged to lly established between tbe numeral keys wl' tbe typewriter and the locking device et a use e `rcooperattive relation to be autom-nti# ermined point in tbe movement of tbe E!) El actuator,l andm'eans for eiectinb tiieesteblislunent of a cooperative relation between seid detent and the numeral keys of the typewriter, said means ineludingcoperetive devices 'mounted on the typewriter trame and carriage respectively.

27. rlhe combination with a. typewriter, of a computing device including a, series of denominational members, a master actuator for the computing device, a detent for the actuator', and means for effecting the estab lishment of a coperative relation betweensaid detent and the numeral lreys ot' the typewriter, said means including cooperative devlces mounted on the typewriter freine .and carria c res ectivel and one of seid devices being adgustable to determine that point in the travel of the carriage at which the cooperative relation between the numeral keys and the detent will be established.

28. The combination with af. typewriter, of a computing device, and means tor automatically effecting :i coperative relation between the keys and the computing device, said means including a trigger and a cooperating trip, said trigger being movably mounted 4on the machine frame and said trip being adjustebly mounted on the typewrimr carriage and arranged to move tbe trigger out ot tbe path of said trip.

29. "ihe combination with a. typewriter, of a computing device, and means for automatically establishing a coperative relation between the computing device and the numeral keys of the typewriter, seid means including a member disposed adjacent to but normally out of operative relation with the key levers of the typewriter, a` trigger operatively related to said member, and means presented to the trigger by the relative movement of the typewriter frame and carriage to operate, said .trigger and move the member into cooperative relation with the key levers.

30. The combination with e. typewritert o1 a computing device, an actuator therefor, a detent Ifor the actuator, a' swinging member disposed for operation by the numerall key levers of the typewriter and arranged to move the detent, and means operated by the relative movement of the machine frame-and carriage of the typewriter for establishing a coperative relation between the swinging member andthe key levers.

3l. Tile combination with a typewris'zer, of a computing device, an actuator therefor, a detent for tbe'actuator, a swinging bail connected to the detent to move the some, and a series of arms or projections carried by the bail and movable into and out o't cooperative relation with the numeral key levers of thetypewriter.

82. The combination with a typewriter i et a computlng device including e series et 

